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Integrated numerical modeling for basin-wide water management: The case of the Rattlesnake Creek basin in south-central Kansas

Journal of Hydrology

By:
, , , , ,
DOI: 10.1016/S0022-1694(98)00289-3

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Abstract

The objective of this article is to develop and implement a comprehensive computer model that is capable of simulating the surface-water, ground-water, and stream-aquifer interactions on a continuous basis for the Rattlesnake Creek basin in south-central Kansas. The model is to be used as a tool for evaluating long-term water-management strategies. The agriculturally-based watershed model SWAT and the ground-water model MODFLOW with stream-aquifer interaction routines, suitably modified, were linked into a comprehensive basin model known as SWATMOD. The hydrologic response unit concept was implemented to overcome the quasi-lumped nature of SWAT and represent the heterogeneity within each subbasin of the basin model. A graphical user-interface and a decision support system were also developed to evaluate scenarios involving manipulation of water fights and agricultural land uses on stream-aquifer system response. An extensive sensitivity analysis on model parameters was conducted, and model limitations and parameter uncertainties were emphasized. A combination of trial-and-error and inverse modeling techniques were employed to calibrate the model against multiple calibration targets of measured ground-water levels, streamflows, and reported irrigation amounts. The split-sample technique was employed for corroborating the calibrated model. The model was run for a 40 y historical simulation period, and a 40 y prediction period. A number of hypothetical management scenarios involving reductions and variations in withdrawal rates and patterns were simulated. The SWATMOD model was developed as a hydrologically rational low-flow model for analyzing, in a user-friendly manner, the conditions in the basin when there is a shortage of water.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Integrated numerical modeling for basin-wide water management: The case of the Rattlesnake Creek basin in south-central Kansas
Series title:
Journal of Hydrology
DOI:
10.1016/S0022-1694(98)00289-3
Volume
214
Issue:
1-4
Year Published:
1999
Language:
English
Publisher:
Elsevier Sci B.V.
Publisher location:
Amsterdam, Netherlands
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Hydrology
First page:
179
Last page:
196
Number of Pages:
18